Apple
Fruit & berry· orchard fruit

What it is
Apple is the pome fruit of Malus domestica, cultivated worldwide in thousands of varieties.
What it tastes like
On the nose: pineapple, fatty, orange-rose. Among its measured molecules: hexyl 2-methylbutyrate, 2-methylbutyric acid, methyl 2-methylbutyrate, 2-methylbutyl acetate, butyl acetate.
What goes with it
- Apricotboth carry butyl acetatecite
- Peachboth carry hexyl acetatecite
- Plumboth carry butyl acetatecite
Salt and acid
Salt
Sodium 1 mg per 100 g — USDA FoodData Central 171688.
Acid
Acid 0.36 % (g/100 g) — USDA FoodData Central 171688.
Unusual pairings
Pairs the library can cite that almost nobody makes.
- Apple + Raspberry
both carry ethyl hexanoate, fruity berry (47 of 338 carry it)
- Apple + Blackcurrant
both carry ethyl butyrate, pineapple (29 of 338 carry it)
- Apple + Cucumber
both carry nonanal, orange-rose (89 of 338 carry it)
14 of 188 compounds on file carry a paper the library can cite.
hexanalaromaaldehydereads as sharp, aldehyde odor (PubChem)Measured in 85 of 338 ingredients.cite
one of only two compounds carrying a value for all four cultivars at both stages in the skin table: OAV 23.32-392.64 at harvest and 42.80-407.84 at the key aroma transition period — Lu et al. 2024, Foods (Table 1, row 'Hexanal')ethyl butyratearomaesterreads as pineapple odor (PubChem)Measured in 21 of 338 ingredients.cite
OAV 3439.60 in Binzi skin at the key aroma transition period (36.09 in Starking at harvest); odour threshold 1 µg/kg — Lu et al. 2024, Foods (Table 1, row 'Ethyl butyrate')1-hexanolaromaalcoholreads as fatty, fruity (PubChem)Measured in 48 of 338 ingredients.cite
the most abundant alcohol of the 11 varieties, 'with a variation between 1.81% and 15.38% compared with the total height of identified VOCs'; alcohols, aldehydes and others together are no more than about 27% of the profile — Chitarrini Giulia et al. 2020, Molecules (Results §2.1, alcohols)2-methylbutyric acidaromaacidMeasured in 4 of 338 ingredients.cite
OAV 606.44 in Starking skin at the key aroma transition period, from 166.19 at harvest; the only acid in either characteristic-VOC table — Lu et al. 2024, Foods (Table 1, row '2-Methyl butyric acid')hexyl acetatearomaesterreads as sweet ester odor (PubChem)Measured in 17 of 338 ingredients.cite
OAV 532.83 in Golden Delicious skin at the key aroma transition period; present in Starking and Golden Delicious but not in the two ancient Chinese cultivars — Lu et al. 2024, Foods (Table 1, row 'Hexyl acetate')2-methylbutyl acetatearomaesterMeasured in 5 of 338 ingredients.cite
OAV 204.46 in Starking skin at the key aroma transition period; odour threshold 5 µg/kg — Lu et al. 2024, Foods (Table 1, row '2-Methylbutyl acetate')methyl 2-methylbutyratearomaesterMeasured in 4 of 338 ingredients.cite
OAV 1388.35 in Starking skin at harvest, rising to 1679.36 at the key aroma transition period; odour threshold 0.25 µg/kg. Not detected in the other three cultivars' skin — Lu et al. 2024, Foods (Table 1, row 'Methyl 2-methylbutyrate')ethyl 2-methylbutyratearomaesterMeasured in 9 of 338 ingredients.cite
the highest OAV of any compound in the paper: 9268.73 in Starking skin and 15,469.63 in Binzi skin at the key aroma transition period, against an odour threshold of 0.1 µg/kg — Lu et al. 2024, Foods (Table 1 (The odor and OAV of the main characteristic VOCs in skin), row 'Ethyl 2-methylbutyrate')hexyl 2-methylbutyratearomaesterMeasured in 1 of 338 ingredients.cite
OAV 527.09 in Starking skin at the key aroma transition period; detected in all four cultivars' skin — Lu et al. 2024, Foods (Table 1, row 'Hexyl 2-methylbutyrate')ethyl hexanoatearomaesterMeasured in 36 of 338 ingredients.cite
OAV 1167.97 in Binzi skin at the key aroma transition period; 153.26 in Starking skin at harvest — Lu et al. 2024, Foods (Table 1, row 'Ethyl caproate')butyl acetatearomaesterreads as sweet (PubChem)Measured in 8 of 338 ingredients.cite
one of the two esters 'mainly represented' after hexyl acetate; 'varied from 3.58% in "Choupette®-Dalinette" site A up to 19.98% in the "CIV323-Isaaq®" site A' of total peak height — Chitarrini Giulia et al. 2020, Molecules (Results §2.1, esters)nonanalaromaaldehydereads as orange-rose odor (PubChem)Measured in 59 of 338 ingredients.cite
OAV 335.04 in Golden Delicious skin at the key aroma transition period; not detected in Starking — Lu et al. 2024, Foods (Table 1, row '1-Nonanal')alpha-farnesenearomaterpenoidMeasured in 8 of 338 ingredients.cite
found 'influencing "Fuji", "Fujion" and "SQ 159" varieties'; the same sentence states its biological function 'is unclear and probably is not a key odor compound in apple', while noting it has been proposed alongside the esters for cultivar classification — Chitarrini Giulia et al. 2020, Molecules (Results §2.1, terpenes)β-damascenonearomaterpenoidMeasured in 13 of 338 ingredients.cite
the only norisoprenoid in either table and the only compound with a value for all four cultivars in the pulp: OAV 241.95-795.87 at harvest, and up to 1574.64 in Xiangguo pulp at the key aroma transition period, on an odour threshold of 0.05 µg/kg — Lu et al. 2024, Foods (Table 2, row 'β-Damascenone')
On file, no cited source yet ✳
These molecules are on record for it from the library's earlier sources. We are buying and requesting the papers; each one that lands moves its molecule up into the cited list.
- methylguanidine
- 3-feruloylquinic acidacid
- Phloretin 2'-O-xylosyl-glucosideflavonoid
- 1-[2-[(2S,3R,4S,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-3-[(2S,3R,4S,5R)-3,4,5-trihydroxyoxan-2-yl]oxyoxan-2-yl]oxy-4,6-dihydroxyphenyl]-3-(4-hydroxyphenyl)propan-1-oneflavonoid
- 3-Hydroxyphloretin 2'-O-glucosideflavonoid
- 3-(4-hydroxyphenyl)propionic acidacid
- putrescinenitrogen compoundreads as strong piperidine-like odor (PubChem)
- syringic acidphenol
- (EZ)-sinapic acidacid
- Epicatechin gallateester
- (RS)-citramalic acidacid
- (2R,3R,4R)-2-(3,4-dihydroxyphenyl)-4-[(2R,3R)-2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-3,4-dihydro-2H-chromen-8-yl]-6-[(2R,3R,4S)-2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-3,4-dihydro-2H-chromen-4-yl]-3,4-dihydro-2H-chromene-3,5,7-triolflavonoid
- 3-Hexen-1-olalcohol
- hexadecaneacid
- spermidinenitrogen compound
- sperminenitrogen compound
- procyanidin B1flavonoid
- terpinoleneterpenoidreads as terpene taste (PubChem)
- (2R,3R)-2-(3,4-dihydroxyphenyl)-6-[(2R,3S,4S)-2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-3,4-dihydro-2H-chromen-4-yl]-3,4-dihydro-2H-chromene-3,5,7-triolflavonoid
- tryptophan N-glucosideacid
- vanillinphenolreads as sweetish smell (PubChem)
- matairesinolphenol
- 2-coumaric acidacid
- 4-((4'-(Aminomethyl)-[1,1'-biphenyl]-3-yl)oxy)pyrimidine-2-carbonitrilenitrogen compound
- Catechin (no stereochemistry defined)flavonoid
- 3-hydroxyphloretin 2'-O-xylosylglucosidephenol
- cyanidin 3-arabinoside cationflavonoid
- cyclohexyl acetateesterreads as odor reminiscent of amyl acetate (PubChem)
- 2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-[(2S,3R,4R,5S)-3,4,5-trihydroxyoxan-2-yl]oxychromen-4-oneflavonoid
- methyl butyrateesterreads as apple-like odor (PubChem)
- Procyanidin B2flavonoid
- pentyl acetateesterreads as persistent banana-like odor (PubChem)
- p-menthan-3-olalcoholreads as cooling odor (PubChem)
- cyanidin cationflavonoid
- Proanthocyanidin B2flavonoid
- Cyanidin 3-b-L-arabinosideflavonoid
- eriodictyol-7-O-glucosideflavonoid
- 4-hydroxybenzoic acidacid
- palmitic acidacidreads as slight characteristic taste (PubChem)
- folic acidacid
- procyanidin C2flavonoid
- 1-o-p-Coumaroyl-beta-d-glucosesugar
- procyanidin B3flavonoid
- (-)-procyanidin B4flavonoid
- geranyl acetateterpenoidreads as odor of lavender (PubChem)
- hex-3-enyl acetateester
- decaneacid
- cinnamtannin A2flavonoid
- 3-(4-hydroxyphenyl)propionamidenitrogen compound
- [(2R,3S,4S,5S,6S)-6-[5-[(2S)-5,7-dihydroxy-4-oxo-2,3-dihydrochromen-2-yl]-2-hydroxyphenoxy]-3,4,5-trihydroxyoxan-2-yl]methyl (E)-3-(4-hydroxyphenyl)prop-2-enoateflavonoid
- procyanidin C1flavonoid
- acetaldehydealdehydereads as pungent, fruity odor (PubChem)
- Chlorogenic acidphenol
- acetoneketonereads as fruity odor (PubChem)
- benzoic acidphenolreads as bitter taste (PubChem)
- p-Coumaroyl-D-glucoseacid
- Luteoliflavan 5-glucosideflavonoid
- 6''-O-trans-p-Coumaroyleriodictyol 3'-glucosideflavonoid
- limoneneterpenoidreads as pleasant lemon-like (PubChem)
- Feruloyl glucoseacid
- benzaldehydealdehydereads as burning aromatic taste (PubChem)
- benzyl alcoholalcoholreads as faint aromatic odor (PubChem)
- 4-guanidinobutyric acidacid
- coumaroyl(3-OMe)(-2)Glcacid
- 3-careneterpenoid
- L-arginineacid
- 3-phenylprop-2-enalacid
- myrceneterpenoidreads as pleasant (PubChem)
- 4-coumaric acidacid
- eugenolphenolreads as odor of cloves (PubChem)
- lariciresinolalcohol
- guanidine
- gallic acidacid
- 4-hydroxybenzoic acidphenol
- Favan-3-olflavonoid
- isopropyl alcoholalcoholreads as burning taste (PubChem)
- glycocyamineacid
- naringeninflavonoid
- N-amidino-L-aspartic acidacid
- eriodictyolflavonoid
- cyanidin 3-O-β-D-glucosideflavonoid
- cyanidin 3-O-beta-D-galactoside(1+)flavonoid
- aucuparinhydrocarbon
- (E)-cinnamic acidacid
- ferulic acidacid
- (2S,4R)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-olterpenoid
- procyanidin B8flavonoid
- phloretinflavonoid
- phloridzinsugar
- 4-guanidinobutyric acidacid
- Prodelphinidin Bflavonoid
- 2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-[(2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxychromen-4-oneflavonoid
- quercetinflavonoid
- apigeninflavonoid
- luteolinflavonoid
- linoleic acidacid
- quercitrinflavonoid
- neochlorogenic acidacid
- isoquercetinflavonoid
- rutinflavonoid
- kaempferolflavonoid
- humuleneterpenoid
- galanginflavonoid
- hyperosideflavonoid
- isorhamnetinflavonoid
- myricetinflavonoid
- rhamnetinflavonoid
- 4-p-Coumaroylquinic acidacid
- ellagic acidphenol
- 24-nor-5beta-cholane-3alpha,7alpha,12alpha,23-tetrolacid
- (E)-cinnamyl alcoholalcoholreads as bitter taste (PubChem)
- quercetin-3-O-beta-D-xylopyranosideflavonoid
- Quercetin 3-xylosideflavonoid
- quercetin 3-O-alpha-L-fucopyranosideflavonoid
- guaijaverinflavonoid
- Einecs 250-156-0flavonoid
- avicularinflavonoid
- D-sorbitolsugarreads as sweet taste, approx 60% as sweet as sugar (wt/wt) (PubChem)
- Kaempferol-3-O-rhamnosidesugar
- creatineacid
- phenylethyl alcoholalcoholreads as sharp burning taste (PubChem)
- phlorizinflavonoid
- 1-pentanolalcoholreads as mild odor (PubChem)
- L-arginineacid
- ethylenehydrocarbonreads as sweet (PubChem)
- Cinnamaldehydealdehydereads as sweet taste (PubChem)
- o-coumaric acidacid
- 3'-hydroxycinnamic acidacid
- p-coumaric acidacid
- geraniolalcoholreads as sweet rose odor (PubChem)
- (E)-sinapic acidacid
- geranialterpenoidreads as strong lemon odor (PubChem)
- trans-β-iononeterpenoidreads as warm woody, dry, and fruity odor (PubChem)
- luteoliflavanflavonoid
- neralterpenoid
- trans-5-O-(4-coumaroyl)-D-quinic acidacid
- bornyl acetateterpenoid
- ursolic acidacid
- epigallocatechin gallateester
- gallocatechinflavonoid
- secoisolariciresinol
- linaloolalcoholreads as spicy, citrus taste (PubChem)
- alpha-pineneterpenoidreads as odor of turpentine (PubChem)
- tangeretinflavonoid
- Perilleneterpenoid
- trans-caffeic acidphenol
- thymolphenolreads as aromatic odor (PubChem)
- ethanolalcoholreads as burning (PubChem)
- (E/Z)-ferulic acidacid
- protocatechuic acidacid
- 5-O-sinapoylquinic acidacid
- 3-O-sinapoylquinic acidacid
- (−)-epicatechinphenol
- (-)-epigallocatechinflavonoid
- hesperetinflavonoid
- (+)-pinoresinolphenol
- p-cymeneterpenoidreads as mild pleasant odor (PubChem)
- Q63392073ester
- glycocyamineacid
- ethyl propionateesterreads as fruity odor (PubChem)
- propyl butyrateester
- decanalaldehydereads as citrus odor (PubChem)
- dodecaneacid
- vanillic acidacid
- benzyl acetateesterreads as pear-like odor (PubChem)
- Cyanidin 3-O-xylosideflavonoid
- tert-butyl propionateester
- ethyl acetateesterreads as fragrant odor (PubChem)
- (+)-catechinflavonoid
- 1-octanolalcoholreads as fresh orange rose odor (PubChem)
- 3-O-feruloyl-D-quinic acidacid
- (4S)-4-hydroxy-3,5,5-trimethyl-4-[(1E,3R)-3-{[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}but-1-en-1-yl]cyclohex-2-en-1-oneterpenoid
- 3-p-Coumaroylquinic acidacid
Sources
- Lu et al. 2024, Foods
- Chitarrini Giulia et al. 2020, Molecules